Adjustable Spark Gap |
1909 |
Amateur-D |
|
8 |
|
|
|
|
Adjustable Spark Gap Y656 |
1919 ? |
Amateur-D |
|
1 |
|
|
|
|
Antenna Switch Dove Marble base |
1914–16 |
Radio part |
|
11 |
|
|
|
|
Antenna Switch Type Y 658 |
1919 ?? |
Radio part |
|
13 |
|
|
|
|
Baby Emerson Loud Speaker Set [.] |
1927/28 |
Radio |
1 - Multivalve |
14 |
|
|
|
$ |
Balanced Variable Condenser Type 800 |
1919 |
Radio part |
|
2 |
|
|
|
|
Billow Armstrong Regenerative Set |
1924 ? |
Radio |
1 - RAC3 |
3 |
|
|
|
|
Blitzen Crystal Receiver |
1912–15 |
Crystal |
|
24 |
|
|
|
$ |
Blitzen Amplifying Coil |
1917 |
Radio part |
|
|
|
|
|
|
Blitzen Amplifying Telephones |
1917 |
Speaker-P |
|
|
|
|
|
|
Blitzen Capacity Condenser |
1917 |
Radio part |
|
|
|
|
|
|
Blitzen Complete Transmitting Set |
1917 |
mod-pre26 |
|
|
|
|
|
|
Blitzen Detector Stand |
1917 |
Radio part |
|
1 |
|
|
|
|
Blitzen Duplex Loading Coil |
1912 |
Radio part |
|
3 |
|
|
|
|
Blitzen Electrolytic Interrupter |
1917 |
mod-pre26 |
|
2 |
|
|
|
|
Blitzen Glass Plate Condenser |
1912 ?? |
Amateur-D |
|
7 |
|
|
|
$ |
Blitzen Helices Oscillation Transformers |
1917 ? |
Radio part |
|
3 |
|
|
|
|
Blitzen Helix 1/4 KW |
1912–17 |
mod-pre26 |
|
4 |
|
|
|
$ |
Blitzen Oscillation Transformer |
1917 |
mod-pre26 |
|
|
|
|
|
|
Blitzen Radiocoupler |
1917 ? |
Radio part |
|
2 |
|
|
|
|
Blitzen Receiving Set |
1912–15 |
mod-pre26 |
|
16 |
|
|
|
|
Blitzen Rotary Variable Condenser [1912 version] |
1912–15 |
Radio part |
|
3 |
|
|
|
|
Blitzen Rotary Variable Condenser |
1917 |
mod-pre26 |
|
4 |
|
|
|
|
Blitzen Spark Gap Cat. No. W656 |
1917 |
mod-pre26 |
|
|
|
|
|
|
Blitzen Switch Cat. No. W782 10-point |
1917 |
Radio part |
|
|
|
|
|
|
Blitzen Tesla Coil |
1917 |
mod-pre26 |
|
|
|
|
|
|
Blitzen Tesla High Frequency Coil |
1917 |
mod-pre26 |
|
|
|
|
|
|
Blitzen Transformer Type E |
1910–20 |
Amateur-D |
|
8 |
|
|
|
$ |
Blitzen Transformer 1/2 K.W. |
1914–20 |
Radio part |
|
4 |
|
|
|
|
Blitzen Transformer 1/4 KW |
1912 |
Radio part |
|
3 |
|
|
|
$ |
Blitzen Tuner |
1912–15 |
mod-pre26 |
|
10 |
|
|
|
$ |
Blitzen Tuning Coil |
1917 |
mod-pre26 |
|
|
|
|
|
|
Blitzen Tuning Coil Single Slide |
1916 |
mod-pre26 |
|
5 |
|
|
|
|
Blitzen Type Transformer L [1/4 K.W.] |
1914–20 |
Radio part |
|
8 |
|
|
|
$ |
Blitzen Wave Meter |
1917 |
Radio part |
|
2 |
|
|
|
|
Boston Wireless Key Engraved Bakelite Base |
1919–21 |
Morse+TTY |
|
3 |
|
|
|
|
Boston Wireless Key Italian Dove Marble base |
1914–17 |
Morse+TTY |
|
10 |
|
|
|
$ |
Bulletin FZ |
1922 |
Paper |
|
27 |
|
|
|
|
Bulletin Z |
1920 ? |
Paper |
|
8 |
|
|
|
|
Cambridge Semi-Quenched Rotating Spark Discharger Y741 |
1917 |
mod-pre26 |
|
1 |
|
|
|
|
Cambridge Tuner for Long Wave length Stations |
1917 |
mod-pre26 |
|
7 |
|
|
|
$ |
Cambridge Variable Condenser |
1917 |
mod-pre26 |
|
6 |
|
|
|
$ |
Catalog M Circa 1915 |
1915 ? |
Paper |
|
23 |
|
|
|
|
Catalog X 1916 |
1916 |
Paper |
|
40 |
|
|
|
|
Ceco Tuning Coil |
1910 |
Radio part |
|
2 |
|
|
|
|
Commercial Receiving Set Type D |
1913–15 |
mod-pre26 |
|
11 |
|
|
|
|
Crystal Radio Receiving Set SS Variometer [Fake modern creation] |
1921 ?? |
Crystal |
|
6 |
|
|
|
$ |
Crystal Receiving Set |
1909–14 |
Crystal |
|
1 |
|
|
|
|
Crystal Receiving Set Duck No. 60X43 |
1912 |
Crystal |
|
2 |
|
|
|
|
Crystal Receiving Set No. 6040 |
1910 |
Crystal |
|
1 |
|
|
|
|
D tuner |
1914–22 |
mod-pre26 |
|
7 |
|
|
|
|
Early Loose Coupler |
1912 ? |
mod-pre26 |
|
2 |
|
|
|
$ |
Gold Seal Super Radak |
1924 |
Radio |
4 - UV201A |
2 |
|
|
|
|
Gold Star [.] |
1925 |
Radio |
5 |
4 |
|
|
|
$ |
High Frequency Buzzer |
1917 |
Radio part |
|
|
|
|
|
|
H.R.A. |
1922 ? |
Ampl/Mixer |
1 |
4 |
|
|
|
|
H.R.L. Regenerative Receiver |
1922 ? |
Radio |
1 - UV200 |
7 |
|
|
|
|
Hytone Quenched Spark Gap |
1915 ? |
mod-pre26 |
|
|
|
|
|
|
Improved Ceco Tuning Coil |
1912 |
mod-pre26 |
|
12 |
|
|
|
$ |
Improved Ferron Detector |
1912 |
Radio part |
|
4 |
|
|
|
$ |
Improved Transformer Type L |
1920 ?? |
Amateur-D |
|
5 |
|
|
|
|
Laboratory Type Variable Air Condenser Y699 Y700 Y701 |
1919 ? |
Radio part |
|
1 |
|
|
|
|
Loose Coupler Crystal Receiver Dual Perikon |
1913 |
Crystal |
|
19 |
|
|
|
$ |
Loose Coupler Tuner Type X Receiving Transformer |
1917 |
mod-pre26 |
|
11 |
|
|
|
$ |
National Radak Junior |
1922 ? |
Radio |
1 - UV201A |
4 |
|
|
|
|
One Stage Amplifier Panel Z.R.A. |
1920–22 |
Ampl/Mixer |
1 - UV201 |
2 |
|
|
|
|
Oscillation Coil Double Slide |
1909 ? |
Amateur-D |
|
5 |
|
|
|
|
Portable Transmitting & Receiving Set Duck No. 97X42 |
1912 |
Amat TRX |
|
1 |
|
|
|
|
Quenched Spark Transmitter |
1917 |
mod-pre26 |
|
|
|
|
|
|
Radak A4 [.] |
1923 |
Ampl/Mixer |
2 |
9 |
|
|
|
$ |
Radak A23 |
1923 |
Radio |
2 |
|
|
|
|
|
Radak C3 |
1923 |
Radio |
3 |
9 |
|
|
|
$ |
Radak C23 |
1923 |
Radio |
4 - UV201A |
13 |
|
|
|
$ |
Radak C63 [.] |
1923 |
Radio |
|
|
|
|
|
|
Radak C64 [.] |
1923 |
Radio |
5 |
3 |
|
|
|
$ |
Radak DD [.] |
1925 |
Radio |
3 - UV201A |
13 |
|
|
|
$ |
Radak Gold Seal |
1924/25 |
Radio |
4 |
|
|
|
|
$ |
Radak H.H.L. |
1923 |
Radio |
3 - WD12 |
5 |
|
|
|
$ |
Radak HR |
1921/22 |
Radio |
1 |
19 |
|
|
1F |
$ |
Radak HZ |
1922 |
Ampl/Mixer |
2 |
9 |
|
|
|
$ |
Radak R3 [.] |
1923 |
Radio |
1 |
|
|
|
|
|
Radak R4 [.] |
1923 |
Radio |
1 - WD12 |
15 |
|
1S |
|
$ |
Radak R23 |
1923 |
Radio |
|
3 |
|
|
|
$ |
Radak R43 |
1923 |
Radio |
1 |
|
|
|
|
|
Radak RHM (RH Macy) [.] |
1924 |
Radio |
3 |
14 |
|
|
|
$ |
Radak RZ |
1922 |
Radio |
3 - UV200 |
13 |
|
|
|
$ |
Radak Electro Ampliphone |
1921 |
Speaker-P |
|
1 |
|
|
|
$ |
Radion Receiving Set |
1916 |
Crystal |
|
1 |
|
|
|
|
Radion Receiving Transformer [New Type] |
1920 |
mod-pre26 |
|
7 |
|
|
|
$ |
Radion Receiving Transformer |
1917 ? |
mod-pre26 |
|
2 |
|
|
|
|
Radion Receiving Transformer Loose Coupler |
1917 |
mod-pre26 |
|
13 |
|
|
|
$ |
Radio Telegraph Apparatus Catalog S |
1915/16 |
Paper |
|
49 |
|
|
|
|
Receiving Set No. 14 |
1910 |
Crystal |
|
1 |
|
|
|
|
Receiving Set No. 16 |
1910 |
Crystal |
|
1 |
|
|
|
|
Receiving Set Type AF |
1916 ? |
Radio |
1 |
1 |
|
|
|
|
Receiving Set Type ASA |
1916 |
mod-pre26 |
|
1 |
|
|
|
|
Receiving Set Type S |
1916–18 |
mod-pre26 |
|
3 |
|
|
|
|
Receiving Transformer De Luxe Type "D" |
1917 ? |
mod-pre26 |
|
8 |
|
|
|
|
Regenerative Receiver HRF |
1922 |
mod-pre26 |
|
2 |
|
|
|
|
Regenerative Receiver (Tuner) ZRF |
1920 |
mod-pre26 |
|
13 |
|
1S |
|
$ |